Please see the attached picture for the full solution.
m∠3= m∠5 (vert. opp. ∠s)
once you graph it hit 2nd (the blue button) and graph
that takes you to a table of coordinates
on the left is x coordinates and on the right is y coordinates and an empty box
(you may have to scroll up/down in order to get ( x, 0)
send it over